Combination woodworking-plane.



M.- L. CARTER.

ooMBINATIoN WooDWoRKING PLANE.

APPLICATIONv FILED IIEB. 13, 1909.

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avi/tucson M. L. CARTER. COMBINATION WOODWORKING PLANE.

APPLIUATION FILED FEB. 13, .1909.

Patented Dee. 14, 1909.

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UNTED STATES PATENT @FFQE MARDONIOUS L. CARTER, OF GLASSPORT,PENNSYLVANIA.

COMBINATION WOGDWORKING-PLANE.

Specification of Letters Patent.

Application filed February 13, 1909.

To all whom it may concern.'

Be it known that I, MARDoNioUs L. CAR- TER, a citizen of the UnitedStates, residing at Glassport, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inCombination lVoodworlring-Planes; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to an improved combination wood-working plane forcarpenters use, and it comprises a plane proper carrying the bits whichin itself forms what is known in the art as a smoothing plane adetachable rear extension and means for securing` the same which when inposition converts said smoothing plane into a jack plane or one ofgreater length and by a further addition of a forward extension inaddition to that of the rear the plane answers the purpose of a foreplane, and the invention further consists in the certain details ofconstruction of parts as will be fully described hereinafter.

In the accompanying drawings :MFigure 1, is a central side sectionalelevation of my improved combination plane showing the same convertedinto a fore-plane, the same being' constructed and arranged inaccordance with my invention. Fig. 2 is a similar vierT partly inelevation, showing the implement converted into aA smoothing plane, therear and forward extensions being adjusted and secured above the levelof the base of same. Fig. 3 is a plan view of the converted fore plane,as shown at Fig. 1. Fig. 11 is an end elevation of the same. Fig. is across section, taken on the line m :c of Fig. l.

To put my invention into practice and thereby construct a convertiblehand plane for carpenters and joiners use and provide a combination ofthese planes in one, l form from cast metal a middle section whichcomprises a flat base 1, upwardly projecting sides 3, extending theentire length of said base, a cross portion 4 located above the throat 5and an inclined integral rest G upon which the bits 7 are held by meansof a plate 8 and screw 9 and rigidly secured by a Patented Dec. ist,i909.

Serial No. 477,535.

thumb screw 10 operating in connection with a pivoted dog 11.

The above described construction diers but slightly from an ordinarysmoothing plane such as are now in common use.

The base 1 of the middle section is rabbeted or reduced to one-half itsthickness both at its forward and rear ends 2, and two threaded openings17-29 formed through the base, and suitably located openings in the twoside flanges 3 for the reception of thumb screws 20 and 32 for thepurpose of securing the front and rear extensions, as will be fullydescribed hereinafter.

The rear extension of the plane consists of a fiat base 27 having sideanges 31, a rabbeted or reduced forward end 28 to register with andengage with the reduced rear end of the plane proper. Formed with thisbase 27 are parallel arranged dovetailed slides 36, which extend in thedirection of its length and are adapted to contain a sliding dovetailedstrip 35, in such manner that said strip may move freely therein. Thisstrip 35 is secured rigidly in a certain position by means of thumbscrews 29-30, engaging with the threaded opening 29 in the base l of theplane proper and with a' similar opening 30 formed in the base of theextension, as will be best seen by reference to Fig. 1 of the drawings.This rearward extension is further secured and made more rigid with theplane proper by means of thumb screws 32 passing through the sideflanges 3 and engaging with threaded openings formed in the flanges 31of said extension (see Figs. 3 and 5) this making a permanent and rigidconnection between the parts. The movable dovetailed member 35 carriesan ordinary handle 33, such as are used on all wood planes said handlebeing attached by a screw 3ft at the forward end and by another passingdown through the same.

At the rear end of the base 27 of the rear extension is a threadedopening 30, and like openings 35 are formed in the side flanges of thesame, by means of which together with the thumb screws 32, this saidextension may be adjusted to the positionshown at Fig. 2 of thedrawings, having first released the screws 29-30, moved the slidingmember 35 back until the thumb screw 29 may engage with the forwardthreaded opening of the base 27 at which time the side screws 32 areadjusted to make a rigid connection of the parts. This backward movementof the sliding member 35 will bring the handle 33 and adjust the otherparts to form the smoothing plane, the

whole having been moved forward and on the top of the base 1 of theplane proper, and when in this position the forward eX- tremity of theguides 36 will project beneath an offset 2G formed beneath the inclinedbit rest 6 and prevent any lateral or vertical movement of theextension.

The forward end of the plane proper is also fitted with an adjustableextension, the same consisting of a base 12, rabbeted to register withthe front rabbet of the base 1, side flanges 14, parallel dovetailedguides 24 in which a corresponding movable member 23 operates in thedirection of its length. This forward extension is secured in line withthe plane proper by means of two thumb screws 17 and 18, together withside screws 20 in the same manner as that of the previously describedrear extension. The sliding member 23 carries a knob or hand hold 16,common to planes of this class and when the said extension is inposition to form a fore plane (as at Fig. 1) said sliding member isprojected into a slot 25 formed at the base of the partition l, and theextension held rigid with the plane proper by thumb screws 17 and 18,engaging the base of said extension and with the base of the planeproper. In addition to these two securing screws 17 18, side screws 20are used which pass through the flanges of the two members, as will beseen by reference to Figs. 1 and 4L.

To adjust the forward extension when the implement is to be used as asmoothing or jack plane the two screws 1?-18 are released, the slidingmember 23 moved back and the one screw 18 engaged with the threadedopening 19 and the extension move to a position on the top of the base 1of the plane proper, the rear end of the sliding member 23 entering apocket 22 formed in the partition el and the rear end of the baseresting upon strips 25 (see Fig. The extension is now secured in thisposition by the side clamping screws 20.

By placing the front and rear extensions in position as at Fig. 1, afore plane is formed. the handle 33 being first adjusted to the properposition.

To form a jack plane it is only necessary to adjust the forwardextension to the position shown at Fig. 2, leaving the rear extensionadjusted as shown at Fig. 1, and in order to convert the implement intoa smoothing plane the front and rear extensions oecupy a position asshown at Fig. 2.

The ad vantages of a convertible plane construction, as described aremany, as is obvious among which are cheapness, as it takes the place ofthe three ordinary smoothing planes required for all ordinarycarpenters" practice, and it may be adjusted to occupy the minimum ofspace in a carpenters tool chest.

Various slight. modifications and changes may be made in the details ofconstruction without departing from the spirit of the invention..llierefoi'e, l do not wish to confine myself to the construction, shownandA described, but wish to claim all suoli modilied forms as would comeproperly within the general scope of the invention.

Having thus described my invention, what l claim and desire to secure byLetters Patent. isz- 1. A. bench plane, comprising a plane proper, anextension therefor, means for attaching the extension with its sole inline with the plane sole, or with the sole in Contact with the innersides of the main `sole plate, and a handle adjustable along theextension.

2. A bench plane, comprising a plane proper, a rearward extensiontherefor, means for attaching the extension with its sole in line withthe plane sole, or with its sole in contact with the inner side of themain sole plate, and a handle adjustable along the extension, incombination with a forward eX- tension, an adjustable knob carried bysaid extension, and means for locking said adjustable knob and extensionto the plane proper.

ln testimony whereof, T affix my signature, in presence of twowitnesses.

MARDONIOUS L. CARTER. YWitnesses YWM. G. WTALTER, ARTHUR V. Molini).

